This post explains and gives practice opportunities related to TEKS A.4A: calculate, using technology, the correlation coefficient between two quantitative variables and interpret this quantity as a measure of the strength of the linear association Instruction Students learn to use a graphing calculator to find the strength of the relationship (correlation) between two sets of variables and how to interpret it. STAAR Practice Between 2016 and 2025, this supporting standard ha

This post explains and gives practice opportunities related to TEKS A.3H: graph the solution set of systems of two linear inequalities in two variables on the coordinate plane Instruction Students learn to find solutions for systems of inequality by graphing them and finding the area of overlap. STAAR Practice Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 4 times on the STAAR test. Videos explaining the problems can be found bel

This post explains and gives practice opportunities related to TEKS A.3F: graph systems of two linear equations in two variables on the coordinate plane and determine the solutions if they exist Instruction Students learn to find solutions for systems of equations either graphically or by using the elimination method. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 7 times on the STAAR test. Videos explaining the problems can be found below. If

This post explains and gives practice opportunities related to TEKS A.3E: determine the effects on the graph of the parent function f(x) = x when f(x) is replaced by af(x), f(x) + d, f(x - c), f(bx) for specific values of a, b, c, and d Instruction Students learn how parent functions are affected when child functions either multiply the slope (affect the steepness) or add to the y-intercept (shift up or down). STAAR Practice Between 2016 and 2025 (including redesign practice)

This post explains and gives practice opportunities related to TEKS A.3D: graph the solution set of linear inequalities in two variables on the coordinate plane Instruction Students extend their skill of graphing functions and use it to graph inequalities. Students also learn locate coordinate pairs within the solution set of graphed inequalities. STAAR Practice Between 2016 and 2025 (including redesign practice), this readiness standard has been tested 20 times on the STAAR

This post explains and gives practice opportunities related to TEKS A.3C: graph linear functions on the coordinate plane and identify key features, including x- intercept, y- intercept, zeros, and slope, in mathematical and real-world problems Instruction Students continue to apply their skill of graphing functions given a variety of information, including equations, the slope, and points on the graph. Students also learn to identify key features of a linear function, such as

This post explains and gives practice opportunities related to TEKS A.3B: calculate the rate of change of a linear function represented tabularly, graphically, or algebraically in context of mathematical and real-world problems Instruction Students learn to calculate the rate of change (think slope) when seen in many forms, including graphs, tables, and equations. STAAR Practice Between 2016 and 2025 (including redesign practice), this readiness standard has been tested 25 ti

This post explains and gives practice opportunities related to TEKS A.3A: determine the slope of a line given a table of values, a graph, two points on the line, and an equation written in various forms, including y = mx + b, Ax + By = C, and y - y1 = m (x - x1 ); Instruction Students practice determining the slope if given a graph, table of values, or two points through which a line passes. They also practice finding the slope if given equations in various forms. STAAR Pract

This post explains and gives practice opportunities related to TEKS A.2I: write systems of two linear equations given a table of values, a graph, and a verbal description Instruction Students take what they know about linear equations and find that intersecting linear equations have a solution that satisfies both equations. They learn to write these systems of equations given graphs, tables, and verbal descriptions (word problems). Here are some activities you can use to tea

This post explains and gives practice opportunities related to TEKS A.2H: write linear inequalities in two variables given a table of values, a graph, and a verbal description; Instruction Students learn to take verbal descriptions (word problems) and translate them into linear inequalities. Graphs can also be used to create inequalities, paying close attention to whether the line is dotted (greater or less than) or solid (greater/less than or equal to). STAAR Practice Betwee

This post explains and gives practice opportunities related to TEKS A.2G: write an equation of a line that is parallel or perpendicular to the X or Y axis and determine whether the slope of the line is zero or undefined; Instruction Lines that are parallel to a given axis can be described by their opposite coordinate. For example, a line parallel to the x-axis can be described by its y-coordinate (e.g., y = 4). Vertical lines (parallel to y-axis) have an undefined slope and h

This post explains and gives practice opportunities related to TEKS A.2F: write the equation of a line that contains a given point and is perpendicular to a given line; Instruction Lines that are perpendicular have opposite reciprocal slopes. Students learn to graph a perpendicular line given a point and the equation for the other line. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 2 times on the STAAR test. Videos explaining the problems can

This post explains and gives practice opportunities related to TEKS A.2E: write the equation of a line that contains a given point and is parallel to a given line; Instruction Lines that are parallel have identical slopes. Students learn to graph a parallel line given a point and the equation for the other line. STAAR Practice Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 6 times on the STAAR test. Videos explaining the problems

This post explains and gives practice opportunities related to TEKS A.2D: write and solve equations involving direct variation; Instruction Students continue their learning from 7th and 8th grade to apply direct variation (y=kx) in various problem situations. STAAR Practice Between 2016 and 2025, this supporting standard has been tested 7 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, click here .

This post explains and gives practice opportunities related to TEKS A.2B: write linear equations in two variables in various forms, including y = mx + b, Ax + By = C, and y - y1 = m (x - x1), given one point and the slope and given two points; Instruction Students learn two new formulas for linear functions, the point-slope form and the standard form. Using what they learned in 8th grade math about how to find the slope and how to write a linear function in slope-intercept fo

Click on the links below to access each post in this Algebra 1 TEKS review series. Reporting Category 1 Number and Algebraic Methods...

This post explains and gives practice opportunities related to TEKS A.2A: determine the domain and range of a linear function in mathematical problems; determine reasonable domain and range values for real-world situations, both continuous and discrete; and represent domain and range using inequalities; Instruction Students learn how to find the domain (set of independent [x] values) and the range (set of dependent [y] values) in both continuous (all possible numbers between